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- W2803248170 abstract "We calculate the charge compressibility and uniform spin susceptibility for the two-dimensional (2D) Hubbard model slightly away from half-filling within a two-loop renormalization group scheme. We find numerically that both those quantities flow to zero as we increase the initial interaction strength from weak to intermediate couplings. This result implies gap openings in both charge and spin excitation spectra for the latter interaction regime. When this occurs, the ground state of the lightly doped 2D Hubbard model may be interpreted as an insulating spin liquid as opposed to a Mott insulating state." @default.
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- W2803248170 date "2005-06-25" @default.
- W2803248170 modified "2023-10-18" @default.
- W2803248170 title "Insulating spin liquid state in the 2D Hubbard model" @default.
- W2803248170 hasPublicationYear "2005" @default.
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